Kev ua tsov ua rog txawv teb chaws txuas ntxiv mus, tab sis kev lag luam macroeconomics tseem tab tom qhia cov cai zoo, thiab ntawm sab kev lag luam, cov nqi hlau hlau tau tsoo qhov siab tshiab ntau zaus. Bifocals tau nce los ntawm kev xav tau ntau ntxiv thaum lub caij cua sov, kev txhawb nqa tus nqi tau muaj zog, thiab cov nqi hlau tau nce ntxiv. , kev ntshai ntawm qhov kev thov siab siab tau nce zuj zus, kev ua lag luam rov ua dua tshiab tau nce ntxiv, cov khoom siv roj av niaj hnub tau poob qis, cov hlau ore imports tau poob qis, ib qho ntxiv ntawm cov av auctions tau pib, thiab lub khw muag khoom muaj zog thiab ruaj khov. Los ntawm qhov kev xav dav dav, cov nqi steel yuav tsum ruaj khov thiab muaj zog tag kis.

Sanon Pipe Kev Lag Luam tam sim no muaj cov yeeb nkab steel hauv qab no:

Seamless steel yeeb nkab rau qis thiab nruab nrab siab boilers - GB/T3087-200810 #, siv rau cov kav dej superheated, cov kav dej kub, cov kav dej txias thiab cov kav dej kub rau cov kav dej boilers, cov kav dej loj, cov kav dej me me thiab cov kav dej cib, thiab lwm yam. Cov khoom tseem ceeb: 10 # 20 #, txheej txheem ntau lawm: kub dov yog xa hauv lub xeev kub dov, txias dov (dov) yog xa mus rau hauv tshav kub-kho lub xeev.

Seamless steel kav rau high-pressure boilers - GB/T5310-2017, Lub hom phiaj: Feem ntau yog siv los tsim cov khoom siv zoo carbon steel, alloy structural steel thiab stainless kub-resistant steel seamless steel kav rau chav boiler kav dej siab thiab siab dua. . Cov qib zoo carbon steel qib muaj xws li 20g, 20mng, thiab 25mng, thiab alloy structural steel qib muaj xws li 15mog, 20mog, 12crmog, 15crmog, 12cr2mog, 12crmovg, 12cr3movsitib, thiab lwm yam.

ASME SA-106/SA-106M-2015—— Cov khoom tseem ceeb: GR.B GR.C

ASTMA210 (A210M)-2012—— Cov khoom tseem ceeb: SA210 GrA1. SA 210 GrC

ASME SA-213/SA-213M- Cov khoom siv feem ntau siv: T11, T12, T22 T23 T91 P92

ASTM A335 / A335M-2018 Cov Lus Qhia Tshwj Xeeb- Cov khoom tseem ceeb: P11 P12 P22 P5 P9 P23 P91 P92

Mechanical pipes thiab chiv thiab tshuaj yeeb nkab:GB/T8162-2008Seamless steel kav rau kev siv cov qauv - cov ntaub ntawv tseem ceeb yog 10.20.35.45.Q345

TS EN 10210-1-2006Kub-dov tsis-alloy structural steel thiab nplua-grain structural steel hollow seem rau steel qauv-S235GRH S275JOH S275J2H S355JOH S355J2H

ASTM A53A53M-2012 Cov Lus Qhia Tshwj XeebSeamless, welded thiab kub-dip galvanized steel yeeb nkab - GR. IB GR

Seamess steel raj rau roj av tawgGB9948-2006 —— Seamless steel raj rau fumace tubes, tshav kub pauv cov raj thiab cov kav dej hauv cov roj av thiab cov nroj tsuag refinery, cov ntaub ntawv tseem ceeb yog: cov qib zoo carbon steel steel qib yog 20G, 20MnG, 25MnG, alloy structural steel steel qib 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, etc.;

Petroleum Pipes Structure Pipes: API 5L (Version 45) Kab Pipes PSL1 PSL2, GB/T 9711-2017 Cov kav hlau rau cov roj thiab roj muaj cov kav dej kav dej, cov khoom siv tseem ceeb: GR.B X42 X52 X60 X65 X70;

API SPEC 5CT-2018 Casing thiab Tubing, cov ntaub ntawv tseem ceeb yog: J55 K55 N80 N80Q L80 L80Q P110